JPH0465900A - Positioning apparatus for board - Google Patents

Abstract

PURPOSE:To advantageously cope with step replacement upon alteration of the type of a board by lifting both sides of a board from below by lifters in a state that clampers are brought into contact with upper edges of both side ends of the board from above to correct the deflection of the board, and positioning the board. CONSTITUTION:Rods 34, 35 are vertically movably inserted into guide tubes 36, 37 passing through a ground plate 26. When the rods 31, 33 of cylinders 30, 32 are moved down, ground parts 24a, 25a are landed on a ground plate 26, and moved down while compressing a spring 28. Simultaneously, a board l is moved down, the upper steps of lifters 22, 23 are pressed to both sides of the board l to correct the deflection of the board l. The board l is snugly secured to clampers 2, 3 by the lifters 22, 23, and the deflection is corrected to provide excellent flatness. Accordingly, even if a transfer head 40 is vertically moved up and down to land an electronic component 42 sucked to the nozzle 41 on the board l, the board l is not fluctuated by the load at the time of landing.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a substrate positioning device, and more particularly to a device for positioning a substrate by correcting its deflection.

(Prior Art) When mounting electronic components on a board or printing a circuit pattern, the board is positioned by a positioning device.

FIG. 5 shows a conventional positioning device, with 10
Reference numeral 1 denotes a substrate, which is slightly bent. 102 is a fixed clamper, 103 is a movable clamper, 104 is a cylinder, 105 is a plate on which a large number of bins 106 are erected, and 107 is a belt conveyor for transporting the substrate 101.

Next, its operation will be explained.

When the substrate 101 is conveyed onto the plate 105 by the conveyor 107, the plate 105 is raised by a cylinder (not shown), and the substrate 101 is lifted by the bin 106. Next, the cylinder 104 is activated, the movable clamper 103 moves to the right, and the substrate 101 is sandwiched and positioned by both clampers 102 and 103. Next, electronic components 109 are mounted on this substrate 101 by a transfer head 108.

(Problem to be Solved by the Invention) However, with the above conventional means, the bottle 106 only lifts the substrate 101, but the deflection of the substrate lot is not corrected, and both sides of the substrate 101 are lifted a small distance from the upper end of the pin 106. Since the electronic components 109 are mounted on both sides, the load at the time of landing causes the board 101 to
There was a problem where it rattled easily.

Furthermore, when the type of board 101 is changed, it is necessary to replace the plate 105 and pins 106 with ones that are compatible with the new board, especially in the case of double-sided mounting in which electronic components 109 are mounted on both the upper and lower surfaces of the board 101. In order to prevent the pin 106 from hitting the electronic component 109 mounted on the bottom surface of the board,
06 must be changed, and furthermore, when the thickness of the board changes, the height of the plate 105 and the length of the pin 106 must be adjusted. There was a problem in that the accompanying setup changes required a great deal of effort and time.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a substrate positioning device that can solve the problems of the conventional means described above.

(Means for Solving the Problems) The present invention provides a clamper that abuts the upper edges of both side ends of a board from above, a push-up body provided below both sides of the board, and a push-up body that moves the board. A board positioning device comprises a lifting means for correcting the deflection of the board by pressing the upper end of the pushing body against the inside of the contact portion of the board and the clamper by raising and lowering the board relative to the clamper. ing.

(Function) In the above configuration, when the clamper is in contact with the upper edge of both side ends of the board from above, the push-up body pushes up both sides of the board from below, thereby correcting the deflection of the board. position.

(Example 1) Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view of the substrate positioning device.

Reference numeral 1 denotes a substrate, which has a downward convex shape and is slightly bent. 2
．． 3 is a fixed clamper and a movable clamper provided on both sides of the substrate l. The inner surface of clamper 2.3 is
It has an upward slope of 4.degree. 5, and is pressed against the upper edges of both ends of the substrate 1 from above (see also FIG. 2). 6 is a cylinder, the rod 7 of which is connected to the clamper 3. When this cylinder 6 operates, the clamper 3
moves laterally and clamps the substrate 1. Note that the fixed clamper 2 may also be a movable clamper.

8.9 is a main body block provided at the lower part of the clamper 2.3, and is a container conveyor for transporting the substrate 1) 10.1
1 is provided. The body block 8.9 is supported on a support block 12.13. A guide rail 15 is arranged below the substrate 1, and the support block 12.13 is placed on this guide rail 15 via sliders 16, 17.

One support block 12 is fixed to the guide rail 15 with screws 18. The other slider 17 is connected to a rod 20 of the cylinder 19. This rod 2
0 protrudes and retracts, the slider 17 slides in the lateral direction, and adjusts the distance between the clamper 2 and the clamper 3 to a medium distance in accordance with the width of the substrate 1.

A push-up body 22, 23 is provided on the support block 12.13. The push-up bodies 22 and 23 are located below both sides of the board 1, and their upper ends are connected to the board 1 and the clamper 2.
It is located a short distance l inward from the contact portion e of No. 3. Further, grounding rods 24 and 25 are inserted into the support blocks 12 and 13. 24a, 25ag lower end grounding part, 27
28 is a bearing portion, and 28 is an elastic coil spring. Further, a grounding plate 26 is provided below the grounding portions 24a, 25a. The push-up bodies 22 and 23 are connected to this ground rod 24.
It is attached to the upper end of 25.

Below the ground plate 26 is a cylinder 30 as a lifting means.
．． 32 are arranged. The rod 31.33 of the cylinder 30.32 is connected to a loft 34.35 which is suspended from the guide rail 15. This loft 34.35
are inserted into guide tubes 36 and 37 passing through the ground plate 26 so as to be movable up and down. Loft 31 of cylinder 30.32
．． 33 descends, the grounding portion 24a.

25a lands on the ground plate 26 and descends while compressing the spring 28. At the same time, the substrate 1 is also lowered, and the upper ends of the pressing bodies 22 and 23 are pressed against both sides of the substrate 1, so that the deflection of the substrate 1 is corrected (see chain lines in FIG. 2).

In this state, the board l is connected to the clampers 2, 3 and the pusher 22.
23, and the bending is corrected to ensure good flatness. Therefore, the electronic components 42 adsorbed by the nozzles 41 can be moved up and down by the transfer head 40.
Even if it lands on the board 1, the board 1 will not shake due to the load upon landing. Furthermore, even when cream solder or a circuit pattern is printed on the upper surface of the substrate 1 using a screen printer, since the flatness of the substrate 1 is ensured, printing can be performed satisfactorily.

(Embodiment 2) In FIGS. 3 and 4, the clampers 51 and 52 are extended portions 51a extending upward from the substrate 1.

52a, and these extending portions 51a, 52a press against the upper edges of both sides of the substrate 1 from above. Also, in this case, the distance between the pressing bodies 22 and 23 is smaller than the contact part e! Abut inward.

When the loft 31.33 of the cylinder 30.32 is lowered and the substrate 1 is lowered, the extending portion 5
It is held between 1a and 52a and push-up bodies 22 and 23. 5
3 is a holding pad. In that state, the cylinder 19
When the loft 20 is removed and the slider 13 is moved to the left, the substrate 1 is pulled to both sides, and the deflection of the substrate 1 is corrected (see the chain line in FIG. 4). According to this means, there is an advantage that even if the substrate 1 is bent in either an upwardly convex shape or a downwardly convex shape, the deflection can be corrected.

(Effects of the Invention) As explained above, the present invention includes a clamper that abuts the upper edges of both side ends of the board from above, a push-up body provided below both sides of the board, and a push-up body that pushes up the board. A substrate positioning device is constituted by a lifting means that corrects the deflection of the substrate by pressing the upper end of the push-up body inward of the contact portion of the substrate and the clamper by raising and lowering it relative to the body. This makes it possible to correct board deflection and securely position the board. In particular, since the push-up body presses against both sides of the board, even if electronic components are mounted on both the top and bottom of the board, the push-up body does not hit the electronic components mounted on the bottom surface of the board. There is no need to adjust the placement of
In addition, this push-up body does not need to be replaced in response to a change in the type of board, so that it can advantageously respond to setup changes that occur when the type of board changes.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of a substrate positioning device, Fig. 2 is a partial front view, Fig. 3 is a front view of another embodiment, and Fig. 4 is a front view of a substrate positioning device. Partial front view, FIG. 5 is a front view of the conventional means. 1... Board 2.3, 51.52... Clamper 22.23... Pusher body 30.32... Lifting means

Claims (1)

[Claims] a clamper that abuts the upper edge of both ends of the board from above; a push-up body provided below both sides of the board;
and a lifting means for correcting the deflection of the substrate by raising and lowering the substrate relative to the push-up body and pressing the upper end of the push-up body inward of the contact portion between the board and the clamper. A board positioning device characterized by: